Want to learn and master CoffeeScript?

Join Exercism’s CoffeeScript Track for access to 51 exercises with automatic analysis of your code and personal mentoring, all 100% free.

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About CoffeeScript

class HelloWorld
  hello: (name = 'World') ->
    "Hello, #{name}!"
module.exports = HelloWorld

51 coding exercises for CoffeeScript on Exercism. From Wordy to Square Root.

Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.

See all CoffeeScript exercises on Exercism

Key Features of CoffeeScript


Transpiles to JavaScript

Same language, better syntax. Use CoffeeScript anywhere JavaScript is used.

Human friendly syntax

Inspired by Ruby and Python, CoffeeScript has a simple, readable, and easy-to-use syntax.

Dynamically typed

Easy to write, easy to read.

Large package ecosystem

CoffeeScript can use any of the 1.3 million+ JavaScript libraries.

Developer happiness

Combine JavaScript's power with your happiness


Use which ever paradigm you want: functional, object-oriented or imperative programming.

Get mentored the CoffeeScript way

Every language has its own way of doing things. CoffeeScript is no different. Our mentors will help you learn to think like a CoffeeScript developer and how to write idiomatic code in CoffeeScript. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in CoffeeScript - they'll help you discover the things you don't know that you don't know.

Learn more about mentoring

Community-sourced CoffeeScript exercises

The CoffeeScript track on Exercism has 51 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.

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Get started with the CoffeeScript track

The best part, it’s 100% free for everyone.